Three-wheeled motor vehicle with high safety

Abstract

A three-wheeled motor vehicle includes a main body, two shafts, two wheel bases, a blocking structure fixed to the main body and a linkage module. Each shaft has first, second and third pivot points. The third pivot point between the first and second pivot points is pivoted to the main body. One wheel base is pivoted to the first pivot points. The other wheel base is pivoted to the second pivot points. The wheel bases and the shafts form a parallelogram four bar mechanism. The linkage module is coupled between the main body and the parallelogram four bar mechanism. When the main body tilts as the three-wheeled motor vehicle turning, the linkage module changes from a first state to a second state to drive the wheel bases to tilt. The linkage module in the second state leans against the blocking structure to limit the tilt range of the wheel bases.

What is claimed is: 
     
       1. A three-wheeled motor vehicle, comprising:
 a main body; 
 two shafts each comprising a first pivot point, a second pivot point and a third pivot point, placed between the first pivot point and the second pivot point, and the third pivot points of the shafts are both pivoted to the main body; 
 two wheel bases, wherein one of the wheel bases is pivoted to the two first pivot points, and the other one of the wheel bases is pivoted to the two second pivot points, such that the two wheel bases and the two shafts form a parallelogram four bar mechanism; 
 two rear wheels respectively pivoted to the two wheel bases; 
 a blocking structure fixed to the main body; and 
 a linkage module coupled between the main body and the parallelogram four bar mechanism, wherein when the main body tilts as the three-wheeled motor vehicle turning, the linkage module changes from a first state to a second state relative to the main body, thereby driving the two wheel bases to tilt through the parallelogram four bar mechanism, and the linkage module leans against the blocking structure in the second state, so as to limit the tilt range of the two wheel bases. 
 
     
     
       2. The three-wheeled motor vehicle according to  claim 1 , wherein the two shafts substantially parallel to each other along a horizontal direction are pivoted to the main body and the two wheel bases, and
 the projection shape of the two first pivot points, the two second pivot points and the third pivot points on a plane vertical to the horizontal direction is defined as a rectangle, and 
 the projection position of the two first pivot points and the two second pivot points on the plane are at four vertexes of the rectangle, and 
 the projection position of the two third pivot points on the plane are respectively located on two opposite side lines of the rectangle. 
 
     
     
       3. The three-wheeled motor vehicles according to  claim 1 , wherein the linkage module comprises:
 two first link bars, both pivoted to one of the shafts at one end thereof, respectively located on either sides of the third pivot point, wherein a fourth pivot point is provided at the other end of each first link bar away from the shaft; 
 two second link bars, both pivoted to the main body at one end thereof, respectively pivoted to the two fourth pivot points at the other end thereof; and 
 two third link bars, both pivoted to each other at one end thereof, respectively pivoted to the two fourth pivot points at the other end thereof. 
 
     
     
       4. The three-wheeled motor vehicle according to  claim 3 , wherein the blocking structure comprises a sliding groove and a sliding block capable of sliding in the sliding groove, and the two third link bars are both pivoted to the sliding block, and the sliding block leans against an end of the sliding groove as the linkage module is in the second state. 
     
     
       5. The three-wheeled motor vehicle according to  claim 3 , wherein the blocking structure comprises two stoppers, the stoppers do not constrain movement of the linkage module as the linkage module is in the first state, and one of the second link bars leans against one of the stoppers as the linkage module is in the second state. 
     
     
       6. The three-wheeled motor vehicle according to  claim 5 , wherein each stopper comprises a stopping surface for leaning against the corresponding second link bar, the three-wheeled motor vehicle further comprises two motors, respectively connected to the two stoppers, to drive the corresponding stopper to rotate and change the angle of the stopping surface, so as to adjust the action range of the corresponding second link bar. 
     
     
       7. The three-wheeled motor vehicle according to  claim 3 , further comprising a fourth link bar, wherein the fourth link bar is pivoted to a pivoted point where the two third link bars are pivoted to each other at one end, and pivoted to the main body at the other end. 
     
     
       8. The three-wheeled motor vehicles according to  claim 1 , wherein each shaft comprises:
 a first horizontal bar with the first pivot point located on one end of the first horizontal bar; and 
 a second horizontal bar with the second pivot point located on one end of the second horizontal bar, and 
 wherein the other end of the first horizontal bar is pivoted to the other end of the second horizontal bar, and the third pivot point is provided on a position where the first horizontal bar and the second horizontal bar are pivoted to each other. 
 
     
     
       9. The three-wheeled motor vehicle according to  claim 1 , further comprising a front wheel pivoted to a front end of the main body.